note 108151 added to function.openssl-private-encrypt

Here is a over simplified version of using the crypt capabilities for getting started: $res = openssl_pkey_new(); // Get private key openssl_pkey_export($res, $privkey); // Get public key $pubkey = openssl_pkey_get_details($res); $pubkey = $pubkey["key"]; var_dump($privkey); var_dump($pubkey); // get some text from command line to work with $tocrypt = trim(fgets(STDIN)); // some variables to work with $encryptedviaprivatekey = ""; //holds text encrypted with the private key $decryptedviapublickey = ""; // holds text which was decrypted by the public key after being encrypted with the private key, should be same as $tocrypt $encryptedviapublickey = ""; // holds text that was encrypted with the public key $decryptedviaprivatekey = ""; // holds text that was decrypted with the private key after being encrypted with the public key, should be the same as $tocrypt openssl_private_encrypt($tocrypt, $encryptedviaprivatekey, $privkey); echo $tocrypt . "->" . $encryptedviaprivatekey; echo "\n\n"; openssl_public_decrypt($encryptedviaprivatekey, $decryptedviapublickey, $pubkey); echo $encryptedviaprivatekey . "->" . $decryptedviapublickey; echo "\n\n"; openssl_public_encrypt($tocrypt,$encryptedviapublickey, $pubkey); echo $tocrypt . "->" . $encryptedviapublickey; echo "\n\n"; openssl_private_decrypt($encryptedviapublickey, $decryptedviaprivatekey, $privkey); echo $encryptedviapublickey . "->" . $decryptedviaprivatekey; Output: string(887) "-----BEGIN RSA PRIVATE KEY----- MIICXAIBAAKBgQCy745x8AqGKlTWBu2Ub80boPaQxo/midZ4LHZ0zbPpiCAfkADN VYSe8OckPKutdjPX7SNAx66PgQRH1xrz1gysbRrf8K/mA0LQ00MKBFaFottWt5cC IaUS9zvCgPw7prwng3hkGShnvTSMXiKFyt1E3RTvpXRk0u46D6hKiy+TSQIDAQAB AoGBAJe1jjNCDtoz19vi4doBdIhhT8vt3iHbafBX2lMr+MceeAXqpRNy10+e9op9 uh0G4+vGDialZnYbMBLs6Ngl+nVnzn+cN1MMJ18brgf3biZKzVzK9wmOW4eycWaR 9eLa7/+ns8Cw5GsLJdG+OHR2gXRXU4hzUFdf90UUbP+kuqK1AkEA2X04XznFDNmT NuhyCixwinlziazJBp/81jjaBhYj3cG0nTF0Gactc/yD0yudbrMqjLBfts+FbG3Z yFHKrAB/cwJBANKetll3M3aCGsermEK+9hbB8yMihCju6pAwClUNkrAgrm9zU4LP WkC81RDzXbz+pfIqpopfn34F3+U2iMiOe1MCQCXpTgpLZ631v1Oy8S4U0QlSYnF9 TQ16lfhBsL+e3GGrgnBkTniqS6IMQm5tC+RgFuqvU//p7LgZ7fydRVb2P0ECQFp9 YADuKskmutTAj6lVnCtI5upYgQmJJHQQf8/tBfHwCKHPnbic17zqpGwk80go7Ckw U98tmDuv0HMNTBVGygsCQALck7VNBRjL9iFzJMFis+alcP1ZC88wOLPvIxYbevUH c8rZwRqt1aHwaWOoxcVom+tyzRC6gEYoBarmU1bX4No= -----END RSA PRIVATE KEY----- " string(272) "-----BEGIN PUBLIC KEY----- MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQCy745x8AqGKlTWBu2Ub80boPaQ xo/midZ4LHZ0zbPpiCAfkADNVYSe8OckPKutdjPX7SNAx66PgQRH1xrz1gysbRrf 8K/mA0LQ00MKBFaFottWt5cCIaUS9zvCgPw7prwng3hkGShnvTSMXiKFyt1E3RTv pXRk0u46D6hKiy+TSQIDAQAB -----END PUBLIC KEY----- " this is a test for crypting ( ¦E@n¥u?7Fëµ¥+-M¼ìk?7¥;t?8[j¼ñrƒ¦ª-TÜ++ßYG?-úö¦}9+k8OJn_?¦x?¦ dó+aév.cå?-ï`,¦?·5u¦p%Z²¤ÜI?û ¼ ( ¦E@n¥u?7Fëµ¥+-M¼ìk?7¥;t?8[j¼ñrƒ¦ª-TÜ++ßYG?-úö¦}9+k8OJn_?¦x?¦ dó+aév.cå?-ï`,¦?·5u¦p%Z²¤ÜI?û ¼->this is a test for crypting this is a test for crypting->hT!¡_ #+£-íßÿo»¢äSs+üSnäÖ-(¦ëIkl[¤¦=?í?Ç+Uy·N,=b=+¦TàmeNo¦A~ùÑtü¦@ÿ½»¦SV5Ѫ*¦?·UÿoPÖFq -? O{²¦á|,äIN)+_-öF+*¦{|??G-??£/?¬±"PFL hT!¡_ #+£-íßÿo»¢äSs+üSnäÖ-(¦ëIkl[¤¦=?í?Ç+Uy·N,=b=+¦TàmeNo¦A~ùÑtü¦@ÿ½»¦SV5Ѫ*¦?·UÿoPÖFq -? O{²¦á|,äIN)+_-öF+*¦{|??G-??£/?¬±"PFL->this is a test for crypting ---- Server IP: 69.147.83.197 Probable Submitter: 208.240.243.170 ---- Manual Page -- http://www.php.net/manual/en/function.openssl-private-encrypt.php Edit -- https://master.php.net/note/edit/108151 Del: integrated -- https://master.php.net/note/delete/108151/integrated Del: useless -- https://master.php.net/note/delete/108151/useless Del: bad code -- https://master.php.net/note/delete/108151/bad+code Del: spam -- https://master.php.net/note/delete/108151/spam Del: non-english -- https://master.php.net/note/delete/108151/non-english Del: in docs -- https://master.php.net/note/delete/108151/in+docs Del: other reasons-- https://master.php.net/note/delete/108151 Reject -- https://master.php.net/note/reject/108151 Search -- https://master.php.net/manage/user-notes.php